Modified, Reliability-Based Robust Geotechnical Design Method, in Accordance with Eurocode 7

Scientific paper - Original scientific paper

• Author: Filip Dodigović
• Author: Krešo Ivandić
• Author: Meho- Saša Kovačević
• Author: Božo Soldo
• Author's institution: University of Zagreb; Faculty of Civil Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract (english)

In this paper a modification of the reliability- based robust geotechnical design (RGD) method is proposed. The intention of the proposed modifications is to simplify the method, make it less computationally expensive, and harmonise of the results with Eurocode 7. The complexity of the RGD method mainly stems from the calculation of the design’s robustness measure, which is the feasibility robustness index (). Due to this fact, the replacing of the existing robustness measure with a generalised reliability index () is considered. It was demonstrated that fits into the robustness concept, and is traditionally used as a construction reliability measure, making it intuitive and “user friendly”. It is proposed to conduct a sensitivity analysis using Soboli indices, with the aim of freezing the variables whose contribution to the system response variance is negligible, which will further simplify the method. By changing the robustness measure, the number of the required reliability analyses is significantly decreased. Further reduction is achieved by conducting analyses only for the designs chosen in the scope of the genetic algorithm. The original RGD method is used as an extension of traditional reliability-based design. By applying the proposed modifications, the RGD method can be used as an alternative to the classic and reliability-based design method.

• Keywords (english): RGD method; geotechnical; reliability analysis; Eurocode 7; robust geotechnical design; reliability index
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Applied sciences (Basel)
• Numbering: vol. 11(18), 8423
• e-ISSN: 2076-3417
• URN:NBN: urn:nbn:hr:237:192998
• Publication: 2021
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-09-04 19:10:25